Apparatus and Method for Correcting Level of Headlamp

3. The apparatus of claim 2, wherein the distance calculator is configured to calculate the inter-vehicle distance to the preceding vehicle by comparing the transverse length of the number plate frame image, which is measured on the number plate frame image, with a transverse length of a standard of a number plate to derive a proportional relationship thereof.

4. The apparatus of claim 2, wherein the number plate frame analyzer is configured to correct a result of the inter-vehicle distance calculated by the distance calculator, by using the inter-vehicle distance to the preceding vehicle, which is measured by a front radar sensor provided in the vehicle.

5. The apparatus of claim 2, wherein the height standard divider is configured equally divide the longitudinal length of the number plate frame that appears on the number plate frame image into a plurality of unit areas having the same height, and then equally divide the height standard of the rear area of the preceding vehicle, from the lower end of the number plate frame to the ground surface, into the unit areas.

6. The apparatus of claim 2, wherein the headlamp level corrector is configured to perform a correction of raising or lowering the level of the headlamp automatically to cause the cutoff line of the headlamp to reach the target line when a headlamp level adjusting device of an automatic correction type, by which the level of the headlamp is automatically adjusted.

7. The apparatus of claim 6, wherein the correction is performed by proactively performing a primary correction of the headlamp level according to a result recognized by a sensor provided therein when the headlamp level adjusting device of the automatic correction type is provided, and additionally raising or lowering the level of the headlamp such that the cutoff line of the headlamp reaches the target line by the headlamp level corrector.

8. The apparatus of claim 2, wherein the headlamp level corrector is configured to output a voice or a popup message that requests performance of a correction of raising or lowering the level of the headlamp to cause the cutoff line of the headlamp to reach the target line, when a headlamp level adjusting device of a switch type is provided.

10. The apparatus of claim 9, wherein the headlamp level indicator is configured to output the image of the preceding vehicle, the cutoff line, and the target line together on a windshield glass when the vehicle is provided with a head up display (HUD).

14. The method of claim 12, wherein a result of the inter-vehicle distance calculated in the calculating of the distance is corrected using the inter-vehicle distance to the preceding vehicle, which is measured by a front radar sensor provided in the vehicle.

17. The method of claim 16, wherein the correction is performed by proactively performing a primary correction of the headlamp level according to a result recognized by a sensor provided therein when the headlamp level adjusting device of the automatic correction type is provided, and additionally raising or lowering the level of the headlamp such that the cutoff line of the headlamp reaches the target line in the correcting of the headlamp level.